The Mk2 Bicoupler is an adapter/fuel tank combination which serves two purposes: connecting Mk2 radial sized parts to 1.25m parts, and serving as a bicoupler (like the TVR-200 Stack Bi-Coupler). It was included in the Spaceplane plus mod which was integrated into KSP 0.25.

Usage

One of the most apparent usages of the Mk2 Bicoupler is to attach two engines at the back of an aircraft. Other uses include adding pairs of intakes.